Dorman 974-009 Tire Pressure Monitor System Sensor DIRECT REPLACEMENT: This Dorman tire pressure monitor system (TPMS) sensor is specifically engineered to match the original design and performance of the tire pressure transmitter on select Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saab, Saturn, and Suzuki vehicles. COMPLETE PACKAGE: Includes stem unit, grommet, washer, and hex nut for a complete installation. EASY INSTALLATION: Dorman's TPMS sensor features a unique two-piece design that allows for replacement of the valve stem independently of the sensor - sensors are designed to accommodate installation angles from 5 to 26 degrees. PROFESSIONALLY TESTED: Vehicle try-on testing has been conducted on this part to ensure trouble-free installation and performance. SUPPORT AVAILABLE: If you have any trouble, every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team.